San Antonio's housing market racked up another month of gains, extending its recovery.

In April, nearly 2,000 existing homes sold, marking a 21.1 percent jump compared to the same period last year, according to data from the San Antonio Board of Realtors. Add to that another 2,149 pending homes sales, and the market is off to a busy spring.

The median sales price also jumped 6.1 percent to $168,100. Still, home prices in the Alamo City are more affordable compared to other major markets in the state and nation, SABOR Chairman Steven Gragg said.

He attributes the recovery to restored consumer confidence, healthy job growth and mortgage interest rates at all-time lows, factors he expects to continue throughout the year.

“What we fail to appreciate sometimes is how steady our market is in San Antonio,” Gragg said. “We'd much rather be steady than have real peaks and valleys. So far this year, everything looks really good.”

Housing inventory remained steady at 5.2 months. Anything less than six months is considered a seller's market, where demand outweighs supply.

Despite the tight inventory, housing-research firm Metrostudy estimates that at least 9,000 homes will be built in the San Antonio area this year, which would be a roughly 11 percent increase from 2012.